Machine for overhauling metal.



J. M CHATFIELD & K. W. HALLDEN.

MACHINE FOR OVERHAULING METAL,

APPLICATION FILED JAN.26.1912

1,051,084. Patented $111.21, 1913.

'7 SHEETS-$HEET L 7i fi er .14.

J. M. GHATFIELD & K. W. HALLDEN.

MACHINE FOR OVERHAULING METAL.

APPLICATION FILED JAN.26,1912.

Patented J an. 21. 1913.

7 SHEETS-SHE 3T 2.

J. M. CHATPIELD & K. W. HALLDEN.

MACHINE FOR OVERHAULING METAL.

APPLICATION FILED JAN. 26, 1012.

1,051,084, Patented Jan,21, 1913.

7 SHEETS-SHEET 3.

J. M. CHATPIELD & K. W. HALLDEN.

MACHINE FOR OVERHAULING METAL.

APPLICATION FILED JAN.Z6,1912. 1,051,084, Patented Jan.21, 1913.

7 SHEETS SHEET 4.

J. M. CHATFIELD & K. W. HALLDEN.

MACHINE FOR OVBRHAULING METAL.

APPLICATION FILED JAN 26, 10 12v Patented Jan. 21, 1913.

'7 SHEETSSHEET 5.

J. M. OHATFIBLD & K. W. HALLDEN.

MACHINE FOR OVEHHAULING METAL.

li. lUlZ.

Patented Jan. 21, 1913.

7 SHBETSSHEET 6.

APPLICATION FILED JAN. 2

J. M. CHATFIELD & K. W. HALLDEN.

MACHINE FOR OVERHAULING METAL.

APPLICATION FILED JAN.26,1012.

1,051,084, Patented Jan. 21, 1913.

7 SHEETS-SHEET 7.

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JAMES M. CHATFIELD AND KARL W. HALLDEN, 0F THOMASTON, CONNECTICUT.

MACHINE FOB OVERHAULING METAL.

Specification of Letters Patent.

Patented Jan.2{1,1913.

To all whom it may concern:

Be it known that we, J .urns M. CHATFIELD and KARL W. HALLDEN, citizens of the United States, residing at Thomaston. in the county of Litchfield and State of Connecticut, have invented a new and useful Improvement in Machines for Overhauling Metal; and we do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1 a top or plan view of an overhauling machine constructed in accordance with our invention, and illustrating mechanism by which our method may be carried out. Fig. 2 a side view of the same. Fig. 3 a view in front end elevation. Fig. 4 a central longitudinal sectional view. Fig. 5 a. transverse sectional view with the trunnion blocks and transmission shown in side elevation. Fig. 6 a reverse broken plan view of the bed of the machine. Fig. 7 a

longitudinal sectional view through one of the trunnion blocks showing the spindle and guide enlarged. Fig. 8 a side view of one of the cutter-heads removed. Fig. .9 a face view of the same partially in section. Fig. 10 a top or lan view of one of the brackets showing spring boxes therein with the gears removed. Fig. 11 a side view partly in section of the same. Fig. 12 a top or plan view of one of the brackets with the box and rolls removed. Fig. 13 an end view of the same. Fig. 14 a broken view on an enlarged scale, showing the relative position of the cutters.

This invention relates to an improvement in machines for overhauling fiat metal plates, that is, for removing the scaleor oxidation from plates of brass after they come from a rollin mill. Machines for this purpose are sometimes called scalping machines.

The object of this invention is to provide means for supporting the plates on one edge and for scalping the entire surface of one or both sides of a strip of metal at one operation rather than to scalp or trim a portion of one surface and then subsequently complete the operation by scalping or cleaning the remaining surface of that side; and the invention consists in the method and construction hereinafter described and particularly recited in the claims.

\ In carrying out our invention, the strips of metal as they come from a rolling machine are fed edgewise on a track 2 which extends longitudinally through the machine,

resting on the bed 3. The strip thus fed is caught by vertically arranged supporting feed-rolls 4L, 5, and is by these feed-rolls moved along to vertical supporting feedrolls 6 and 7, and thence to vertical supporting feed-rolls 8 and 9, and subsequently to vertical supporting feed-rolls 10 and 11 by which the strip is moved so far beyond the opposite or outer end of the machine as to permit it to befreadily grasped and removed 7 from the machine. It will be noted that the several feed-rolls are long rolls so that they form supports for the strip being fed through the machine, as distinguished from disk-like rolls which have merely the funcof the bed, which uprights are connected by a tie-rod 88, the screws being held against iongitudinal movement, but free to turn in the uprights and having threading engage ment with the brackets. Below the bed 3 are two transversely arranged shafts 19 and 20. Keyed to one of these shafts, as 19, are three worms 21, 22 and 23, and t0 the other shaft '20 are three similar worms 24, 25 and 26, the worms on one shaft being reversed in pitch to the worms on the other shaft.

The lower end of the feed-roll 5 carries a worm-gear 27 which meshes with the worm 22 by which it is driven in one direction. The feed roll 4 on the other hand carries at its upper end a pinion 28 meshing with'a gear 29 on a counter shaft 30ca-rrying at its lower end a worm wheel 31 which meshes with the worm 23. The feed roll 6 carries at its lower end a worm gear'32 which also meshes with the worm 22, while the feed roll 7 carries at its upper end a gear 33 meshing with a gear 34 on a countenshaft 35 which at its lower end carries a. worm gear 36 meshing with the worm 21. The feed roll 8 carries at its lower end a worm gear 37 meshing with the worm 25, and the feed roll .9 carries at its upper end a gear 38 These brackets are adjustable 30 meshing with a gear 39 on a counter shaft 40 having at its lower end a worm gear 41 roll carries at its upper end a gear 43 meshing with the gear 44 at the upper end of the counter shaft 45 which counter shaft carries at its lower end a worm gear 46 meshing with the worm 26, and so that the rolls on one side of the track move in one direction, and the rolls on the opposite side of the track move in the opposite (lll'QCtlOll and in a direction to carry the strip to be operated upon through the machine.

The sliding movement of the rolls is in a line parallel with the longitudinal axis of the worms, and the length of the threads on the worms is such as to permit the worm gears to be moved with relation thereto without becoming disengaged therefrom.

The ends of the feed rolls 4 and 10 on one side of the track are mounted in sliding boxes 46, 46 as shown in Fig. 10 and the counter shafts for these rolls are also mounted in sliding boxes 47, 47 and the boxes 47, 47 are forced toward the center of the machine by springs 48. The boxes 46, 47, and 46 47 are connected together by short rods 49 serving to maintain them in the same relative position, and keep the gears carried by their upper ends in mesh. The feed rolls 6 and 8 are also forced toward the center of the machine by springs 50 hearing on boxes 51,at the ends of these rolls. The boxes 46, 47 and 51 are mounted in recesses 53 formed for them in the tops of the brackets, which recesses limit the inward movement of the boxes. Between the feed rolls 6 and 7 and 8 and 9, is a transverse drive shaft 54; and mounted on the bed below this shaft are two trunnion blocks 55 and 56. The trunnion blocks 55 and 56 are movable on the bed by set. screws 57 and 58, and when adjusted are held by set screws 59 and 60 extending up through slots 61 and 62 in the bed, and the uprights 18 have clearance openings 63 to permit the removal of the trunnion blocks. In the block 55 is a spindle 64, and in the block 56 is a spindle 65. The spindle 64 carries a gear 66 meshing with a pinion 67 on the shaft 54, and the spindle 65 carries a gear 68 meshing with a gear 69 also on the shaft 54. so that thesespindles are both driven in the same dircction. The spindle 64 carries a ringlike head 70 supporting a series of cutters 71, while the spindle 65 carriesacorresponding head 72 with corresponding cutters 73. The cutter heads, as shown, are screwed onto the spindles so that they can. be readily removed to aTlow the cutters to be ground. This is desirable in order to permit one head to be removed and replaced vby another, while. the cutters in the removed head are being ground. The spindles 64 and 65 are suitably mounted in the trunnion blocks and are tubular, and extending through them are rod-like guide-carriers 74 each carrying at its inner end a disk-like guide 75 which guides stand within the circle described by the cutters. These guide-rods :llt held against rotation in the spindle by keys 76, and are permitted to have the slight longitudinal movement necessary for adjustment. The outer ends 77 of these guiderods are reduced in diameter to receive nuts 78. and are held in place on the reduced end 77 by washers 79. These guides serve to support the strip at the time it is being cut and prevent the strip from moving transversely so that one cutter will not cut deeper than the other, and also for supporting the forward end of the strip as it enters between the cutters, and for supporting the rear end of the strip as it leaves the cutters. In other words, the guides serve to hold the strip centrally between the cutters. It may be noted that the spindles have flanges 80 bearing against the inner ends of the trunnion blocks and carry nuts 81 at their outer.

speed mechanism with a shaft 82 which 5 shaft carries sprocket wheels 83, 83 and these sprocket wheels are connected by sprocket chains 84 and 85 with the worm shafts 19 and 26. The bearings for the drive shaft 54 are in the uprights 18, and the bearing for the shaft 82 is in one of the uprights 18 which upright also carries a yoke 86 supporting a box 87 for one end of the shaft 82.

A strip of brass coming from the rolling mill is fed onto the track 2 and is caught by the feed rolls 4 and 5 and by them carried to the feed rolls 6 and 7. By the action of these four rolls and particularly by the rolls 6 and 7, the strip is forced between the cutters where the entire surface of both sides of the strip is overhauled or scalped, and it will be noted that the movement of the cut ters gives a sweeping cut and the direction is downward tending to throw the chips downward through'the bed of the machine which is open below the cutters so that all chips may immediately drop out, and therefore cannot by any possibility clog'the machine or interfere with the action of the cutters, which in their upward movement clear the strip and prevent undue cutting or scratching after the surface has been finished.

It is apparent, without illustration, that if desired, the cutters on one of the spindles might be omitted and the strip first scalped on one side and then passed through the machine so as to scalp or overhaul the op osite side. But preferably both sides W111 be scalped at a single aoperation. It isalso obvlous that instead of mounting the spindles exactly in line with each other, they might beiarrangedparallel with each other but indifierent. planes so that the cutting'on one side of the strip would take place in advance of the cutting on the opposite side of the strip. As a matter of fact, the spindles are not exactly in line but so nearly so, that it is impossible'to illustrate the offset, on the scale shown. In Fig. 14, however, this ofi'set is shown .on an exaggerated scale. This offset, although 'very slight, is sulficient to make the space between them sli' htly less at the front than at the back, angj this is to insure the cutters clearing the metal after the metal has been overhauled or scalped.

We claim 1. In a machine for overhauling flatmetal bars, the combination with a bed, of alongitudinal track-thereon, bracketsarranged on opposite sides of the track, and transversely ad ustabIe, vertically. arranged feed-rolls mounted in said brackets, spindles mounted on opposite sides of the track, said spindles 'carrying ring-like cutters, guide-rods extending through said spindles and carrying ingwitnesses. p

guides within the circle described by the cutters,.means for adjustin the guides and cutters, and means for driving the cutters.

2. In a machine for overhauling flat metal bars, the-combination with the bed thereof, of a longitudinal track across the'bed, trun nion bearings arranged on opposite sides of the track, spindles mounted in said trunnions and carrying cutter-Heads, cutters mounted in said heads, brackets mounted on saidbed on'oppos'ite sides of the track, said brackets carrying vertically arranged feed rolls, a drive shaft in connection 'Withthe spindles whereby the cutters are revolved,

worm. shafts arranged below the bed and carrying worms having connection with the feed rolls, and connections between the drive shaft and worm shafts'whereby the cutters and feed rolls are moved in unison.

In testimony whereof, we have signed this specification in the presence of two subscrib- JAS. M. CHATFIELD. KARL w. ,HALLDEN.

Witnesses Am'Ht'm ,D. .Woonwann, MAmucr: A. Wm. 

